The popen() subprocess

The subprocessmodule implements only one class: popen(). The primary use of this class is to spawn a new process on the system. This class can accept additional arguments for the running process, along with additional arguments for popen() itself:

Arguments	Meaning
args	A string, or a sequence of program arguments.
bufsize	It is supplied as the buffering argument to the open() function when creating the stdin/stdout/stderr pipe file objects.
executable	A replacement program to execute.
stdin, stdout, stderr	These specify the executed program's standard input, standard output, and standard error file handles, respectively.
shell	If True, the command will be executed through the shell (the default is False). In Linux, this means calling the /bin/sh before running the child process.
cwd	Sets the current directory before the child is executed.
env	Defines the environmental variables for the new process.

 

Now, let us focus on args. The popen() command can take a Python list as an...